The conversion of ideal gas into solids is

The correct option is Impossible.

To understand why it is impossible to convert an ideal gas into a solid, we must look at the fundamental assumptions of the kinetic molecular theory of ideal gases.

An ideal gas is defined by two key postulates regarding intermolecular forces and molecular volume:
1. Zero Intermolecular Forces: There are no attractive or repulsive forces between the molecules of an ideal gas. The molecules move completely independently of one another.
2. Negligible Volume: The actual volume occupied by the gas molecules themselves is negligible compared to the total volume of the container.

For any substance to undergo a phase transition from gas to liquid, and subsequently to solid (a process known as condensation and freezing), intermolecular forces of attraction must pull the molecules close together to form a stable, ordered structure.
Since an ideal gas has absolutely no intermolecular attractions by definition, its molecules can never cluster together to form a liquid or a solid state, regardless of how much the temperature is lowered or the pressure is increased.

Therefore, the conversion of an ideal gas into a solid is Impossible.